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An electronic diary is shown to be more reliable than a paper diary: results from a randomized crossover study in patients with persistent asthma.
- Source :
-
The Journal of asthma : official journal of the Association for the Care of Asthma [J Asthma] 2012 Nov; Vol. 49 (9), pp. 952-60. Date of Electronic Publication: 2012 Oct 04. - Publication Year :
- 2012
-
Abstract
- Objectives: Test-retest reliability of an asthma paper diary versus an electronic diary (e-diary) with an integrated peak flow meter was investigated. The equivalence of the two modes was also evaluated.<br />Methods: Prospective, randomized crossover study design in adolescents (12-17 years) and adults (≥18 years). Key inclusion criteria were persistent asthma, Asthma Control Test (ACT) scores ≥16, use of inhaled corticosteroid with or without long-acting beta-agonist for ≥12 weeks, nocturnal awakenings <2 times in the past week, and activity limitations <1 per week. Participants were randomized to either paper then e-diary or e-diary then paper, to be completed for 14 days each.<br />Results: Forty-seven participants completed all study visits. Weekly percentage of symptom-free days (SFDs) and rescue-free days (RFDs) were calculated. Intraclass correlation coefficients (ICCs) of Week 1 mean SFD and RFD (test) and Week 2 mean SFD and RFD (retest), respectively, were estimated in three groups defined as stable: (i) minimal changes in asthma symptoms, as measured by the global patient reported symptom change question, (ii) less than 15% change (absolute value) in 1 second FEV(1) at adjacent study visits, and (iii) changes in ACT scores less than three points for each mode. SFD demonstrated acceptable ICC (≥0.70) using all three definitions of asthma stability for both modes.<br />Conclusion: Acceptable reproducibility of the percentage of RFD (ICC = 0.78) was only observed for the e-diary using the FEV(1) stability criterion. The ICCs for SFD and RFD were acceptable, 0.84 and 0.70, respectively, suggesting better reliability for the e-diary.
- Subjects :
- Adolescent
Adrenal Cortex Hormones administration & dosage
Adrenergic beta-Agonists administration & dosage
Adult
Child
Cross-Over Studies
Female
Humans
Male
Middle Aged
Reproducibility of Results
Self Report
Severity of Illness Index
Young Adult
Adrenal Cortex Hormones therapeutic use
Adrenergic beta-Agonists therapeutic use
Asthma drug therapy
Asthma physiopathology
Data Collection methods
Medical Records
Subjects
Details
- Language :
- English
- ISSN :
- 1532-4303
- Volume :
- 49
- Issue :
- 9
- Database :
- MEDLINE
- Journal :
- The Journal of asthma : official journal of the Association for the Care of Asthma
- Publication Type :
- Academic Journal
- Accession number :
- 23033885
- Full Text :
- https://doi.org/10.3109/02770903.2012.724754